Stove.



B. R. UAHOONE.

STOVE.

APPLICATION FILED MAR. 5, 1906.

953,51 3, Patented Mar. 29, 1910.

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ANDREV! B. GRAHAM o0. PKOTO-LITQO'GRAPMERS. WASWNG'YON, u. c

E. R. GAHOONE.

I STOVE.

APPLIGATION FILED MAR. 5, 1906.

953,5 1 3;, Patented Mar. 29, 1910.

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E. R. OAHOONE.

STOVE.

APPLICATION FILED MAR. 5, 1906. 953,513@ Patented Mar.29,1910.

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Smuentoz 5 Caiwwwz ANDREW B. GRAHAM 00.. PHOTO-UTHOGRAPHERS,WASHINGYON.u. a

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STOVE.

T 0 all whom it may concern:

Be it known that I, EDWIN R. CAHooNE, a citizen of the United States,residing at Troy, in the county of Rensselaer and State of New York,have invented certain new and useful Improvements in Stoves, of whichthe following is a specification.

This invention relates to improvements in stoves.

The object of the invention is to provide specific details ofconstruction, to economize in the expense of manufacture and simplifythe assembling of the parts.

A further object of the invention is to provide means for distributingair to the fire-pot, to promote combustion.

A further object of the invention is to arrange a water-back adjacentthe rear lining and the oven, whereby the heat of the oven is notreduced.

Other objects and advantages will be hereinafter referred to, andparticularly pointed out in the claims.

In the drawings-Figure 1 is a sectional view of a conventional stove.Fig. 2 is a view of a lining support. Fig. 3 is a face view of a rearlining which is of slightly modified form. Fig. 4 is a sectional View ofthe same. Fig. 5 is a detail perspective view of the rear lining shownin Fig. 1. Fig. 6 is a vertical section of another form of stove with myimprovement applied. Fig. 7 is a detail plan view of a slightlyclifferent means for retarding the escaping products of combustion. Fig.8, is a horizontal sectional view taken above the lining supportingframe about on the line m-.t, Fig.1.

The numeral 1, indicates a stove casing, having a grate 2, oven 3, andash pit 4. In the front and sides of the stove, I provide a lining,composed of two sections 5, and 6. The lining section 6, is spaced fromthe easing 1, to form an air heating chamber 1*, at the front and sidesof the fire box, the said lining section 6, terminating a short distancefrom the top of the stove to provide an exit 10, for the heated air topass to the fire pot. The lining section 5, extends from the casing 1,at a point adjacent the upper end of the lining section 6, and extendsdown within the air heating chamber 1, to a point just above the bottomof the same. This lining section 5, is spaced from the casing 1,

and the inner lining section 6, to provide an a1r inlet passage orchamber 7 and an outlet Specification of Letters Patent.

Application filed March 5, 1906.

Patented Mar. 29, 1916.

Serial No. 304,317.

passage or chamber 8, air being admitted from the atmosphere at 9, andpassing to the fire pot at 10.

A lining frame 11, is mounted in the lower part of the fire-pot, and itconsists of a rear bar 12, and end bars 1313. The front edge of the rearbar is formed with a series of fingers 14, and notches 15, and in rearof the fingers are openings 16, while projections 17 abutting againstthe oven or back wall of the fire chamber, form intermediate spaces 17,through which air passes from the ashpit to the fire-pot.

19, indicates sections of a rear fire-pot lining, each sectionconsisting of an overhanging head 20, base 21, and a central bodyportion 22, extending therefrom being a rib 23. Depending from base 21,is a lug 24:, which fits in one of the openings 16, while the step 25,of head 20, rests in a seat 26, on the upper edge of the oven. Byreference to Fig. 1, it will be noted that rib 23, is slightly spacedfrom the oven to permit free passage of air between the said lining andoven. At the top and bottom of the body portion 22, are openings 27 and28, and extending downwardly from the base 21, is a finger 29, whichrests over one of the fingers 14.

When the lining is assembled, a slight space 31, is formed for the freepassage of heated air, and by the construction of the base and the frame11, a series of air inlets are formed at the bottom of the fire-pot,whereby the products of combustion may pass from the fire-pot up andbehind the lining. Air passes from the ash-pit 4-, into the chamber 33,behind the lining where it is mixed with the products of combustion, andthen escapes to the fire-pot through the spaces 31, and through theopenings 27, at the top. The highly heated air is therefore introducedto the body of fuel, through space 31, and to the escaping products ofcombustion above the top of the fuel through openings 27.

Located between the head 20, and base 21, is a Water back 35, in thepresent instance a coil of pipe, and by its location it is subjected tothe influence of heat, first by the products of combustion within thefire pot, and secondly by the heated air passin from the chamber 33, tothe exit flue. 13y the location of the water back as described, it issubjected to the products -of combustion on one side, and highly heatedair on the other, without in the least affecting the temperature of theoven, as the air mixed with the products of combustion in chamber 33, issufiicient for this.

The exit fine 40, is contracted above the rear lining, by a deflector41. The function of this feature is to somewhat retard the escapingproducts of combustion in the fire pot. Air from the front and sidelinings is delivered above the top of the fuel and mixes with theescaping gases, to furnish a higher grade of combustion, which isfurther augmented by the heated air coming from the chamber 33, in areverse direction. By contracting the exit flue these various streams ofair tend to mix with the gases to better consume the fuel.

In Fig. 6, I have shown a stove of a clifferent type, with myimprovements applied thereto, 50, indicating an air duct, which dividesthe fire pot into a fuel chamber 51, and a combustion chamber 52. Underthese conditions the rear lining distributes the air in exactly the samemanner as previously described, and the water back is acted upon in likemanner.

In Figs. 3 and 4, I have shown the rear lining formed of fewer sections,and having openings 54, for the escape of the heated air. In connectionwith this feature I have shown a deflector 55, in chamber 33, to deflectand more thoroughly heat and mix the air, as will be readily understood.

As shown in Fig. 7, a swinging damper 100, is shown at or near the rearof the exit flue, to retard the escaping products of combustion when itis turned in a vertical position. When starting a fire the damper isturned down flat to allow all the draft possible, and after the fire iswell under way, the damper is thrown up and it performs the samefunction as rib 41.

What I claim is:

1. In a stove, the combination with a casing, a fire-pot, of an ovenspaced from the top of the casing to form an exit flue, a water-back inthe fire-pot, said water-back being spaced from the oven, the spacecommunicating with the fire-pot near the top thereof, means supplyingheated air to the lower end of the space formed between the water-backand the oven, and means at the point of communication of the space withthe fire-pot for directing the products of combustion toward the frontof the latter, to cross the products of combustion escaping to the exitflue.

2. In a stove, the combination with a casing, and a fire pot, of an ovenspaced from the top of the casing to form an exit flue, a water back inthe fire pot, said water back having openings for the passage of air andbeing spaced from the oven, means supply ing heated air to the lower endof the space formed between the water back and the oven, means affordingcommunication between the upper end of said space and the fire pot nearthe exit flue, said latter means directing the products of combustiontoward the front of the fire pot to cross the products of combustionescaping to the exit flue and above the point where air is admitted tothe bottom of said space.

3. In a stove, the combination with a firepot, an oven, a rear liningfor the fire-pot adjacent the oven and spaced therefrom to form an airheating chamber, said lining being formed of a series of sections withinterposed spaces betwecn said sections to form communication betweenthe air heating chamber and the fire-pot and through which a part of theproducts of combustion enter the air heating chamber under the influenceof the draft, said lining sections having flanges to direct the productsof combustion across the fire-pot, means for supplying air from theash-pit to the air heating chamber, and a water-back includinghorizontally spaced pipes supported in front of the rear lining withwhich the products of combustion escaping through the interposed spacescontact.

4. In a stove, the combination with a fire pot, a casing, an oven spacedfrom the easing to form an exit flue, a rear fire pot lining formed withopenings and spaced from the oven to form a chamber, a part of theproducts of combustion being drawn through said openings into thechamber under the influence of the draft, means for supplying thechamber with air from the ash-pit, said air passing to the fire-pot andthrough the openings formed in the lining, thence to the exit flue,means at the top of the chamber for directing the products of combustionacross the fire-pot, means for supplying heated air at or near the topof the fire-pot to commingle with the escaping products of combustion atthe exit flue, and a waterback including horizontally spaced pipessupported in front of the rear lining with which the products ofcombustion escaping through the openings formed in said sectionscontact.

5. In a stove, the combination with a firepot, an oven, a frame in thefire-pot, said frame being formed with a series of notches and openings,a series of lining sect-ions supported by the oven and the frame, eachsection having a head at its upper end which rests against the oven anda projection at its lower end adapted to fit in one of the openings ofthe frame, spaces being formed between the sections when they areassembled, a chamber formed between the sections and the oven, means forsupplying air to the chamber from the ashpit, the products of combustionpassing through the notches in the frame to mingle with the air in saidchamber, and a water back including spaced pipes supported in front ofthe lining sections with which the products of combustion escapingthrough spaces formed between said sections contact.

6. In a stove, the combination with a casing, a fire-pot, a lining atthe front and sides thereof, the lining at the front having an airheating chamber which communicates with the atmosphere at one end andthe file pot at the opposite end, an oven spaced from the casing to forman exit fine, a rear lining having openings and located adjacent theoven and spaced therefrom to form an air heating chamber, a part of theproducts of combustion being drawn through the openings into the latterchamber under the influence of the draft, and means for supplying air tothe chamber formed between the rear lining and oven, said air passingfrom the air heating chamber formed between the rear lining and the oventhrough the openings in said rear lining into the fire-pot, means nearthe top of the lining for directing part of the products of combustionacross the fire-pot, means for retarding the products of combustion inthe exit flue, and a water-back including spaced pipes supported infront of the 'rear lining with which the products of combustion escapingto the firept from the air heating chamber contact.

7. In a stove, the combination with a casing, and oven, spaced from thecasing to form an exit flue, a rear lining formed with open ings andlocated adjacent said oven, said lining being spaced from said oven toform a chamber, a part of the products of combustion being drawn throughthe openings into the chamber under the influence of the draft, meansfor supplying air to said chamber, said air passing through saidopenings formed in the rear lining to the fire-pot, means for directingpart of the products of combustion in the chamber across the firepot,means for retarding the products of combustion in the exit flue, meansfor supplying heated air to the escaping products of combustion at apoint adjacent the retarding means, and a water-back including spacedpipes supported in front of said rear lining with which the product-s ofcombustion escaping through the openings contact.

8. In a stove, the combination with an oven, a fire-pot, linings at thefront and sides of said fire-pot, the lining at the front having anopening communicating with the atmosphere and other openingscommunicating with the fire-pot above the fuel, a lining formed withopenings and located in rear of the fire-pot adjacent the oven, saidlatter lining being spaced from the oven to form an air chamber whichcommunicates with the ash-pit and the fire-pot, a part of the productsof combustion passing into the chamber through the openings under theinfluence of the draft, means near the top of the lining for directingthe products of combustion across the fire-pot, an ash-pit, and awater-back including spaced pipes supported in front of the rear liningwith which the products of combustion passing therefrom contact.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDIVIN R. GAIIOONE.

Vitnesses JOSEPH P. SWIFT, I'IENRY Gr. ANDREWS.

